CN114981539A - Method for operating a high-consistency solution pump and high-consistency solution pump - Google Patents
Method for operating a high-consistency solution pump and high-consistency solution pump Download PDFInfo
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- CN114981539A CN114981539A CN202180008476.8A CN202180008476A CN114981539A CN 114981539 A CN114981539 A CN 114981539A CN 202180008476 A CN202180008476 A CN 202180008476A CN 114981539 A CN114981539 A CN 114981539A
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- 238000000034 method Methods 0.000 title claims abstract description 66
- 239000012530 fluid Substances 0.000 claims abstract description 24
- 230000010355 oscillation Effects 0.000 claims description 35
- 238000005457 optimization Methods 0.000 claims description 8
- 238000002485 combustion reaction Methods 0.000 claims description 7
- 230000001419 dependent effect Effects 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 claims description 3
- 239000000446 fuel Substances 0.000 claims description 3
- 239000008186 active pharmaceutical agent Substances 0.000 description 10
- 230000006870 function Effects 0.000 description 6
- 239000004566 building material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 239000004568 cement Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/26—Control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/26—Control
- F04B1/28—Control of machines or pumps with stationary cylinders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
- F04B15/023—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous supply of fluid to the pump by gravity through a hopper, e.g. without intake valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
- F04B9/10—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid
- F04B9/109—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers
- F04B9/117—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers the pumping members not being mechanically connected to each other
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
- F04B9/10—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid
- F04B9/109—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers
- F04B9/117—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers the pumping members not being mechanically connected to each other
- F04B9/1176—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers the pumping members not being mechanically connected to each other the movement of each piston in one direction being obtained by a single-acting piston liquid motor
- F04B9/1178—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers the pumping members not being mechanically connected to each other the movement of each piston in one direction being obtained by a single-acting piston liquid motor the movement in the other direction being obtained by a hydraulic connection between the liquid motor cylinders
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention relates to a method for operating a high-concentration solution pump (1), wherein the high-concentration solution pump (1) has: a high-concentration solution delivery system (2), wherein the high-concentration solution delivery system (2) is designed for delivering a high-concentration solution (DS) with a variably adjustable delivery volume flow (QF); and a hydraulic drive system (3), wherein the hydraulic drive system (3) has for driving the high-concentration solution delivery system (2); a hydraulic circuit (4) having a Hydraulic Fluid (HF), a first variably operable drive pump (5), and a second variably operable drive pump (7), wherein the first drive pump (5) is designed for variable operation with at least one first variably adjustable pump parameter (P5), and the second drive pump (7) is designed for variable operation with at least one second variably adjustable pump parameter (P7) independently of the first pump parameter (P5) in order to generate a total variably adjustable drive volume flow (QA) of the Hydraulic Fluid (HF) in the hydraulic circuit (4), wherein the method has the following steps: determining a total drive volumetric flow target value (QAs) for said total drive volumetric flow (QA); determining a first parameter target value (P5S) of the first pump parameter (P5) and a second parameter target value (P7S) of the second pump parameter (P7) as a function of the determined total drive volumetric flow target value (QAS), wherein the first parameter target value (P5S) and the second parameter target value (P7S) differ from each other if the determined total drive volumetric flow target value (QAS) is within at least one total drive volumetric flow target value range (QASB 1, QASB2, QASB3, sb QASB1 ') from a set (0, QASB1, QASB2, QASB3, QASB4, QASB1', QASB2', QASB 3') of possible total drive volumetric flow target values (QAS); and delivering the high concentration solution (DS) at a delivery volume flow (QF) having a delivery volume flow target value (QFS) by generating a total actuation volume flow (QA) having the determined total actuation volume flow target value (QAS) by adjusting the first pump parameter (P5) to the determined first parameter target value (P5S) and the second pump parameter (P7) to the determined second parameter target value (P7S).
Description
Technical Field
The present invention relates to a method for operating a high-strength solution pump and a high-strength solution pump.
Disclosure of Invention
The object on which the invention is based is to provide a method for operating a high-consistency solution pump and a high-consistency solution pump, which each have improved properties.
The invention solves this object by providing a method having the features of claim 1 and a high-strength solution pump having the features of claim 15. Advantageous embodiments and/or embodiments of the invention are described in the dependent claims.
The method according to the invention, which is in particular automated, is designed or configured for operating a high-concentration solution pump, in particular automatically. The high-strength solution pump includes or has a high-strength solution delivery system and a hydraulic drive system. The high-strength solution delivery system is designed or configured to deliver a high-strength solution with a variably adjustable delivery volume flow, in particular a delivery volume flow value. For driving the high-concentration solution delivery system, the hydraulic drive system comprises or has a hydraulic circuit, in particular a common hydraulic circuit, which comprises or has a hydraulic fluid, a first drive pump that can be operated variably and a second drive pump that can be operated variably. The first drive pump is designed or configured for variable operation with at least one variably adjustable first pump parameter, in particular a pump parameter value, and the second drive pump is designed or configured for variable operation independently of the first pump parameter with at least one variably adjustable second pump parameter, i.e. a pump parameter value, in order to generate, in particular directly generate, a variably adjustable total drive volume flow, in particular a total drive volume flow value, or a total drive volume flow of the hydraulic fluid in the hydraulic circuit, in particular in the same hydraulic circuit. The method comprises or has the steps of: a total drive volume flow target value for the total drive volume flow is determined, in particular automatically determined. A first parameter target value of the first pump parameter and a second parameter target value of the second pump parameter are determined, in particular automatically determined, as a function of the determined total drive volume flow target value, in particular at least the determined total drive volume flow target value. Here, the first parameter target value and the second parameter target value are different from each other if the determined total driving volume flow target value is within at least one total driving volume flow target value from the set of possible total driving volume flow target values. The high-concentration solution is delivered at a delivery volume flow rate having a delivery volume flow rate target value by generating a total drive volume flow rate having a determined total drive volume flow rate target value by adjusting, in particular automatically adjusting, the first pump parameter to the determined first parameter target value and adjusting, in particular automatically adjusting, the second pump parameter to the determined second parameter target value.
This enables, in particular, a first parameter target value and a second parameter target value that differ from each other to be achieved: the high-strength solution pump is operated more optimally, in particular in contrast to the method for operating a high-strength solution pump not according to the invention, in which the first parameter target value and the second parameter target value are identical to one another for all possible total drive volume flow target values.
In particular, the at least one total driving volume flow target value range may have or comprise at least one of the total driving volume flow target values in the case that the first parameter target value and the second parameter target value differ from each other. In particular, the at least one total driving volume flow target value range may be at least 20 percent (%), in particular at least 30%, in particular at least 40%, and/or at most 100% of the set of possible total driving volume flow target values in case the first parameter target value and the second parameter target value differ from each other. Additionally or alternatively, the first parameter target value and the second parameter target value may be identical to each other if the determined total driving volumetric flow target value is within at least one further total driving volumetric flow target value from the set of possible total driving volumetric flow target values. Further additionally or alternatively, it is not necessary to determine: the determined total driven volumetric flow target value is at or is within at least one total driven volumetric flow target value from the set of possible total driven volumetric flow target values.
The first pump parameter or the first parameter target value and the second pump parameter or the second parameter target value may be similar or homogeneous or of the same type or in the same unit, in particular in units of measure.
These values, in particular target values, can be limited in units of measure, in particular absolute measure, or relative units, in particular% in particular by a minimum value of 0% and a maximum value of 100%, respectively.
"variably adjustable" may be referred to as adjustable or changeable, and/or variably adjustable may be referred to as adjustable or changeable, and/or variably operable actuation pump may be referred to as variable displacement pump. Additionally or alternatively, "variably adjustable" may mean adjustable to at least three different values, in particular to at least three different values in a stepless manner; and/or variable adjustment may mean adjustment to one of at least three different values, in particular in a stepless manner. Further additionally or alternatively, the first parameter target value and/or the second parameter target value may be changed or adjusted or otherwise adjusted upon a change in the total drive volume flow target value.
The total drive volume flow target value may be specified by a user or operator of the high-concentration solution pump.
The total drive volume flow of the hydraulic fluid can be generated in the drive pressure section, in particular in the drive high pressure section, of the hydraulic circuit. Additionally or alternatively, the first drive pump and the second drive pump may be coupled to each other.
The hydraulic fluid may have oil, and in particular may be oil.
The high-strength solution pump may be a building material pump. Additionally or alternatively, the high-strength solution delivery system may be configured to deliver a high-strength solution in the form of a building material. The building material may be mortar, cement, mortar, concrete and/or plaster. Further additionally or alternatively, the highly concentrated solution may be referred to as a slurry.
In one embodiment of the invention, the method comprises or has the following steps: a delivery volume flow target value for the delivery volume flow is determined, in particular automatically determined, in particular detected. The method comprises the following steps: a total drive volume flow target value is determined based on the determined delivery volume flow target value. The delivery volume flow target value may in particular be specified by a user of the high-concentration solution pump.
In one embodiment of the invention, the method comprises or has the following steps: the actual value of the drive pressure, in particular the drive pressure at high pressure, of the hydraulic fluid in the hydraulic circuit is detected, in particular automatically detected. The actual value of the drive pressure is adjusted in accordance with the actual value of the delivery pressure of the high-concentration solution at the time of or during the delivery. The method comprises the following steps: a first parameter target value and a second parameter target value are determined based on the detected actual value of the drive pressure. This, in particular the determination of the first parameter target value and the second parameter target value as a function of the detected actual drive pressure value, enables a more optimal operation of the high-concentration solution pump, in particular in contrast to the method for operating a high-concentration solution pump not according to the invention, in which the first parameter target value and the second parameter target value are not determined as a function of the actual drive pressure value. The actual value of the delivery pressure can be set, in particular, and changed during or during delivery, depending on the consistency of the high-strength solution pump during delivery and/or the rod state of the distributor rod (if present). Additionally or alternatively, the hydraulic drive system, in particular the first drive pump and the second drive pump, may be constructed or designed or such that the actual value of the drive pressure may be adjusted. Further additionally or alternatively, the first parameter target value and/or the second parameter target value may be changed or adjusted or otherwise adjusted as the actual value of the drive pressure changes. Further additionally or alternatively, the drive pressure may be in a drive pressure section of the hydraulic circuit, and the drive high pressure may in particular be in a drive high pressure section of the hydraulic circuit.
In one embodiment of the invention, the high-concentration solution pump comprises or has at least one, in particular only one, drive motor. The at least one drive motor is designed or configured to rotate the first drive pump and the second drive pump to produce a total drive volume flow. The method comprises the following steps: the high concentration solution is delivered by rotating the first drive pump and the second drive pump by the at least one drive motor.
In one embodiment of the invention, the first drive pump is designed or configured for variable rotation using a first pump parameter in the form of a variably adjustable first pump rotational speed, and the second drive pump is designed or configured for variable rotation independently of the first pump rotational speed using a second pump parameter in the form of a variably adjustable second pump rotational speed. In particular, if the determined total driving volume flow target value lies within the at least one total driving volume flow target value range, the first parameter target value in the form of the first pump rotational speed target value and the second parameter target value in the form of the second pump rotational speed target value differ from each other. Additionally or alternatively, the method has: the high-concentration solution is delivered by adjusting the first pump rotational speed to the determined first pump rotational speed target value and adjusting the second pump rotational speed to the determined second pump rotational speed target value. In addition or alternatively, the high-concentration solution pump can have at least one variably adjustable gear, wherein the at least one variably adjustable gear can connect a drive motor, in particular the sole drive motor, to the first drive pump and/or the second drive pump for rotation. This may enable independence of the first pump speed and the second pump speed from each other.
In one embodiment of the invention, the high-concentration solution pump comprises or has a first drive motor that can be operated variably and a second drive motor that can be operated variably independently of the first drive motor. The first drive motor is designed or configured for variable rotation of the first drive pump, and the second drive motor is designed or configured for variable rotation of the second drive pump. This can be achieved: the high-concentration solution pump does not need to have a variably adjustable transmission mechanism. In particular, the first drive motor can be designed to variably adjust a first motor rotational speed of the first drive motor; and/or the second drive motor can be designed for variably adjusting, in particular independently of the first motor speed, the second motor speed of the second drive motor. Additionally or alternatively, the first drive motor need not be designed for variable rotation of the second drive pump; and/or the second drive motor need not be designed for variable rotation of the first drive pump.
In one embodiment of the invention, the first drive motor and the second drive motor each comprise or have an electric drive motor. In particular, the first drive motor and the second drive motor are each electric drive motors. The electric drive motor can be, in particular, a synchronous motor, in particular a synchronous motor with an assigned frequency converter of the high-concentration solution pump.
In one embodiment of the invention, the drive motor, in particular the sole drive motor, comprises or has a combustion drive motor. In particular, the drive motor, in particular the only drive motor, is a combustion drive motor. The combustion drive motor can have a diesel drive motor, in particular, a diesel drive motor.
In one embodiment of the invention, a first drive pump in the form of a first axial piston pump having or comprising a variably adjustable first slide or swash plate is designed or configured for variably adjusting a first pump variable in the form of a first pivot angle of the first slide, and a second drive pump in the form of a second axial piston pump having or comprising a variably adjustable second slide or swash plate is designed or configured for variably adjusting a second pump variable in the form of a second pivot angle of the second slide independently of the first pivot angle. This can be achieved: the high-concentration solution pump may have only one single drive motor and/or need not have a variably adjustable transmission. The first drive pump and the second drive pump can be designed in particular for rotation, in particular variable rotation, with a fixed or non-variably adjustable pump rotational speed ratio, in particular the same, in particular variably adjustable pump rotational speed. Additionally or alternatively, the first parameter target value in the form of the first swing angle target value and the second parameter target value in the form of the second swing angle target value are different from each other if the determined total driving volume flow target value is within the at least one total driving volume flow target value range. Further additionally or alternatively, the method has: the high-concentration solution is delivered by adjusting the first swing angle to the determined first swing angle target value and the second swing angle to the determined second swing angle target value. Further additionally or alternatively, the method may have: a first parameter target value in the form of a first swing angle target value and a second parameter target value in the form of a second swing angle target value are determined as a function of a motor rotational speed value, in particular a motor rotational speed actual value, of the drive motor.
In one embodiment of the invention, the drive motor, in particular the single drive motor, is designed or configured to variably adjust the motor speed of the drive motor. The method comprises or has the steps of: a motor rotational speed target value for the motor rotational speed is determined, in particular automatically determined, if present, on the basis of the determined total drive volume flow target value, in particular and the detected actual drive pressure value. The method comprises the following steps: the high-concentration solution is delivered by adjusting, in particular automatically adjusting, the motor speed to the determined target motor speed.
In one embodiment of the invention, in the case of an increased total drive volumetric flow target value in the range of a low total drive volumetric flow target value, the first pivot angle target value of the first pivot angle is increased, in particular from a first pivot angle minimum, in particular zero, up to a first pivot angle maximum, and the second pivot angle target value of the second pivot angle is constant, in particular a second pivot angle minimum, in particular zero, and, in the range of a higher total drive volumetric flow target value, the second pivot angle target value is increased, in particular from a second pivot angle minimum, in particular zero, up to a second pivot angle maximum, in particular and again in the range of a higher total drive volumetric flow target value if the first pivot angle target value is the first pivot angle maximum and the second pivot angle target value is the second pivot angle maximum, the target motor speed value is increased from a minimum motor speed value, in particular a minimum motor speed value greater than zero, to a maximum motor speed value. This enables maximum efficiency of the hydraulic drive system. In particular, the motor rotational speed target value can be constant, in particular the motor rotational speed minimum value, in particular greater than zero, in a low total drive volume flow target value range and/or in a higher total drive volume flow target value range. Additionally or alternatively, the first and second swing angle minima may be the same, and/or the first and second swing angle maxima may be the same. In addition or alternatively, the second axial piston pump can generate the same total drive volume flow value of the total drive volume flow at the second maximum oscillation angle as the first axial piston pump at the first maximum oscillation angle, in particular at the same pump rotational speed.
In one embodiment of the invention, the total drive volume flow value of the total drive volume flow generated, in particular generated individually, by the second axial piston pump at the second maximum oscillation angle of the second oscillation angle is higher than the total drive volume flow value of the total drive volume flow generated, in particular generated individually, by the first axial piston pump at the first maximum oscillation angle of the first oscillation angle, in particular at the same pump rotational speed. In the case of an increased total drive volumetric flow target value in the range of the lower total drive volumetric flow target value, the first pivot angle target value of the first pivot angle is higher than the second pivot angle target value of the second pivot angle up to the first pivot angle maximum value, and in the range of the higher total drive volumetric flow target value the second pivot angle target value is higher than the first pivot angle target value up to the second pivot angle maximum value, in particular and if the first pivot angle target value is the first pivot angle maximum value and the second pivot angle target value is the second pivot angle maximum value, in the range of the again higher total drive volumetric flow target value the motor rotational speed target value is increased from the motor rotational speed minimum value up to the motor rotational speed maximum value. This enables maximum efficiency of the hydraulic drive system. In other words: the second axial piston pump may have or have a higher maximum displacement than the first axial piston pump. In particular, the motor rotational speed target value can be constant, in particular the motor rotational speed minimum value, in particular greater than zero, in a low total drive volume flow target value range and/or in a higher total drive volume flow target value range. Additionally or alternatively, the first and second rocking angle maxima may be the same.
In a further embodiment, in particular in one embodiment of the invention, the method has: depending on the optimization criterion, a first parameter target value and a second parameter target value, in particular a motor speed target value, if present, are determined. The optimization criterion is a maximum efficiency of the high-concentration solution pump, in particular of the hydraulic drive system, in particular of the first drive pump and/or of the second drive pump, or a minimum energy consumption, in particular of the minimum fuel consumption, and/or of the at least one drive motor. The optimization criteria may be specified, inter alia, by a user of the high-concentration solution pump.
In one embodiment of the invention, the first drive pump and the second drive pump are arranged in parallel in the hydraulic circuit. In addition or alternatively, the hydraulic drive system comprises or has a variably movable drive piston, in particular at least one variably movable drive piston, in the hydraulic circuit for driving the high-concentration solution delivery system. The first drive pump and the second drive pump are designed or configured to generate a variably adjustable total drive volume flow of hydraulic fluid in the hydraulic circuit for variably moving the drive piston, in particular the at least one drive piston. The method comprises the following steps: the high-concentration solution is delivered by means of a variably movable drive piston. In particular, the first parameter target value and the second parameter target value may differ from each other at or during a stroke, in particular at least 50% of the length and/or duration of the stroke, in particular and not only when the direction of movement of the drive piston is changed.
The high-concentration solution pump according to the present invention has: a high-strength solution delivery system, in particular the high-strength solution delivery system; a hydraulic drive system, in particular the hydraulic drive system; and a determination device, in particular an electrical determination device. The high-strength solution delivery system is designed for delivering a high-strength solution, in particular a high-strength solution, with a variably adjustable delivery volume flow, in particular a variably adjustable delivery volume flow. For driving the high-concentration solution delivery system, the hydraulic drive system has a hydraulic circuit, in particular a hydraulic circuit, which has: hydraulic fluid, in particular the hydraulic fluid; a first variably operable drive pump, in particular the first variably operable drive pump; and a second variably operable drive pump, in particular a second variably operable drive pump. The first drive pump is designed for variable operation with at least one, in particular the at least one, variably adjustable first pump parameter, and the second drive pump is designed for variable operation with at least one, in particular the at least one, variably adjustable second pump parameter, independently of the first pump parameter, in order to generate a variably adjustable total drive volume flow of the hydraulic fluid, in particular the variably adjustable total drive volume flow, in the hydraulic circuit. The determination device is designed or configured to determine, in particular automatically determine, a total drive volume flow target value, in particular the total drive volume flow target value, for the total drive volume flow. Furthermore, the determination device is designed or configured to determine, in particular automatically, a first parameter target value, in particular the first parameter target value, of the first pump parameter and a second parameter target value, in particular the second parameter target value, of the second pump parameter as a function of the determined total drive volume flow target value. The first parameter target value and the second parameter target value are different from each other if the determined total driving volume flow target value is within at least one, in particular the at least one, total driving volume flow target value from the set of possible total driving volume flow target values, in particular the set of possible total driving volume flow target values. The high-concentration solution pump is designed or configured to: the high-concentration solution is delivered at a delivery volume flow rate having a delivery volume flow rate target value, in particular a delivery volume flow rate target value, by generating a total drive volume flow rate having the determined total drive volume flow rate target value by adjusting, in particular automatically adjusting, the first pump parameter to the determined first parameter target value and adjusting, in particular automatically adjusting, the second pump parameter to the determined second parameter target value.
The high-concentration solution pump can achieve the same advantages as the above-described method.
The high-concentration solution pump may be designed or configured, inter alia, for performing the above-described method.
The determining means may have a processor and/or a memory.
Drawings
Further advantages and aspects of the invention emerge from the claims and from the following description of preferred embodiments of the invention, which are set forth subsequently with reference to the drawings. Here:
fig. 1 shows a schematic circuit diagram of a high-concentration solution pump according to the invention with only one single drive motor;
FIG. 2 shows a schematic circuit diagram of a segment of a high strength solution pump having a first drive motor and a second drive motor in accordance with the present invention;
fig. 3 shows a flow chart of a method according to the invention for operating a high-concentration solution pump according to the invention by means of a look-up table;
FIG. 4 shows a flow chart for determining the look-up table of FIG. 3;
fig. 5 shows a flow chart of a method according to the invention for operating a high-concentration solution pump according to the invention by means of an online determination;
fig. 6 shows a graph of a first parameter target value in the form of a first swing angle target value, a second parameter target value in the form of a second swing angle target value and a motor rotational speed target value with an increased total driving volume flow target value according to the method of the invention; and
fig. 7 shows a further graph of the first parameter target value in the form of the first pivot angle target value, the second parameter target value in the form of the second pivot angle target value and the motor rotational speed target value with the increased total drive volume flow target value according to the method of the invention.
Detailed Description
Fig. 1 and 2 show a high-strength solution pump 1 according to the invention. The high-concentration solution pump 1 has a high-concentration solution delivery system 2, a hydraulic drive system 3, and a determination device 50. The high-concentration solution delivery system 2 is designed to deliver the high-concentration solution DS with a variably adjustable delivery volume flow QF. For driving the high-concentration solution delivery system 2, the hydraulic drive system 3 has a hydraulic circuit 4 with a hydraulic fluid HF, a first drive pump 5 which can be operated variably and a second drive pump 7 which can be operated variably. The first drive pump 5 is designed for variable operation with at least one first variably adjustable pump parameter P5, and the second drive pump 7 is designed for variable operation with at least one second variably adjustable pump parameter P7, independently of the first pump parameter P5, in order to generate a total variably adjustable drive volume flow QA of the hydraulic fluid HF in the hydraulic circuit 4. The determination means 50 are designed for determining a total drive volume flow target value QAs of the total drive volume flow value QA, as shown in fig. 3 and 5. Furthermore, the determination device 50 is designed for determining a first parameter target value P5S of the first pump parameter P5 and a second parameter target value P7S of the second pump parameter P7 in dependence on the determined total drive volumetric flow target value QAS. If the determined total driving volumetric flow target value QAS is within at least one total driving volumetric flow target value range QASB1, QASB2, QASB3, QASB1 'from the set 0, QASB1, QASB2, QASB3, QASB4, QASB1', QASB2', QASB3' of possible total driving volumetric flow target values QAS, the first parameter target value P5S and the second parameter target value P7S are different from each other, as shown in fig. 6 and 7. The high-concentration solution pump 1 is designed to: the high-concentration solution DS is delivered at a delivery volume flow rate QF with a delivery volume flow rate target value QFS by generating a total drive volume flow rate QA with the determined total drive volume flow rate target value QAS by adjusting the first pump parameter P5 to the determined first parameter target value P5S and the second pump parameter P7 to the determined second parameter target value P7S.
Fig. 3 and 5 show a method according to the invention for operating a high-concentration solution pump 1. The high-concentration solution pump 1 has a high-concentration solution delivery system 2 and a hydraulic drive system 3. The high-strength solution delivery system 2 is designed to deliver the high-strength solution DS with a variably adjustable delivery volume flow QF. For driving the high-concentration solution delivery system 2, the hydraulic drive system 3 has a hydraulic circuit 4 with a hydraulic fluid HF, a first drive pump 5 which can be operated variably, and a second drive pump 7 which can be operated variably. The first drive pump 5 is designed for variable operation with at least one first variably adjustable pump parameter P5, and the second drive pump 7 is designed for variable operation with at least one second variably adjustable pump parameter P7, independently of the first pump parameter P5, in order to generate a total variably adjustable drive volume flow QA of the hydraulic fluid HF in the hydraulic circuit 4. The method comprises the following steps: in particular, by means of the determination device 50, a total drive volume flow target value QAs of the total drive volume flow QA is determined. In particular, by means of the determination device 50, a first parameter target value P5S of the first pump parameter P5 and a second parameter target value P7S of the second pump parameter P7 are determined as a function of the determined total drive volume flow target value QAS. Here, the first parameter target value P5S and the second parameter target value P7S are different from each other if the determined total drive volumetric flow target value QAS is within at least one total drive volumetric flow target value range QASB1, QASB2, QASB3, QASB1 'from the set 0, QASB1, QASB2, QASB3, QASB4, QASB1', QASB2', QASB3' of possible total drive volumetric flow target values QAS. The high-concentration solution DS is delivered in particular with a delivery volume flow rate QF having a delivery volume flow rate target value QFS by means of the high-concentration solution pump 1, in particular by means of the high-concentration solution delivery system 2, in particular by means of the actuation of the high-concentration solution delivery system 2, in particular by means of the hydraulic drive system 3, by means of the generation of a total drive volume flow rate QA having the determined total drive volume flow rate target value QAS by adjusting the first pump parameter P5 to the determined first parameter target value P5S and the second pump parameter P7 to the determined second parameter target value P7S, in particular and by means of the operation of the first drive pump 5 and the second drive pump 7.
In the exemplary embodiment shown, the hydraulic drive system 3 has only a first drive pump 5 which can be operated variably and a second drive pump 7 which can be operated variably. In an alternative embodiment, the hydraulic drive system may have at least three, in particular at least four, variably operable drive pumps.
Specifically, a first drive pump 5 and a second drive pump 7 are arranged in parallel in the hydraulic circuit 4.
The hydraulic drive system 3 additionally has variably displaceable drive pistons 11a, 11b in the hydraulic circuit 4 for driving the high-concentration solution delivery system 2. The first drive pump 5 and the second drive pump 7 are designed to generate a variably adjustable total drive volume flow QA of the hydraulic fluid HF in the hydraulic circuit 4 for variably moving the drive pistons 11a, 11 b. The method comprises the following steps: the high-concentration solution DS is delivered by means of variably moving the drive pistons 11a, 11 b.
In the exemplary embodiment shown, the hydraulic drive system 3 has exactly two variably movable drive pistons 11a, 11 b. In alternative embodiments, the hydraulic drive system may have only one single variably movable drive piston or at least three, in particular at least four, variably movable drive pistons. In particular, the hydraulic drive system 3 has one, in the illustrated exemplary embodiment two drive cylinders 10a, 10 b. The drive pistons 11a, 11b are arranged in the drive cylinders 10a, 10b, in particular the assigned drive cylinders.
The hydraulic circuit 4 also has a swivel line 60.
The first and second drive pumps 5, 7 and the two drive cylinders 10a, 10b form a closed drive circuit for the hydraulic fluid HF by means of the return line 60.
Furthermore, the two drive pistons 11a, 11b are coupled, in particular coupled in anti-phase, by means of a return line 60.
The first and second drive pumps 5, 7 or the closed drive circuit further have a high-pressure side and a low-pressure side, in particular they are exchanged periodically with each other, in particular during or when the high-strength solution pump 1 is in operation.
Further, the high concentration solution delivery system 2 has: a conveying cylinder 12a, 12b, in particular at least one conveying cylinder; and variably displaceable delivery pistons 13a, 13b, in particular at least one variably displaceable delivery piston, for delivering the high-concentration solution DS with a variably adjustable delivery volume flow QF. The delivery pistons 13a, 13b are arranged in the delivery cylinders 12a, 12b, in particular the assigned delivery cylinders. The method comprises the following steps: the high-concentration solution DS is delivered by variably moving the delivery pistons 13a, 13 b.
In particular, the high-concentration solution pump 1 has a piston rod 14a, 14b, in particular at least one piston cylinder. The piston rods 14a, 14b are fastened to the drive pistons 11a, 11b, in particular to the assigned drive pistons, for coupling to or transmitting movement of the delivery pistons 13a, 13b, in particular to the assigned delivery pistons.
The method also has the following steps: in particular, by means of the determination device 50, a delivery volume flow target value QFs for the delivery volume flow QF is determined. The method comprises the following steps: a total driving volume flow target value QAS is determined from the determined delivery volume flow target value QFS.
In particular, the high-concentration solution pump 1 has an operating panel 51 that can be operated by a user for specifying, in particular selecting, a delivery volume flow target QFS by the user of the high-concentration solution pump 1.
The method also has the steps of: in particular, by means of the sensor 40, in particular an electrical sensor, of the high-concentration solution pump 1, the drive pressure pA, in particular the actual drive pressure pAI that drives the high pressure pH, of the hydraulic fluid HF in the hydraulic circuit 4 is detected. The actual drive pressure pAI of the drive pressure pA is adjusted in accordance with the actual delivery pressure pFI of the delivery pressure pF of the high concentration solution DS at the time of delivery. The method comprises the following steps: the first parameter target value P5S and the second parameter target value P7S are determined according to the detected actual value pAI of the driving pressure.
The high-concentration solution pump 1 further has at least one drive motor 9, 95, 97. The at least one drive motor 9, 95, 97 is designed to rotate the first drive pump 5 and the second drive pump 7 to generate a total drive volume flow QA. The method comprises the following steps: the high concentration solution DS is delivered by rotating the first drive pump 5 and the second drive pump 7 by the at least one drive motor 9, 95, 97.
Furthermore, the first drive pump 5 is designed for variable rotation using a first pump parameter P5 in the form of a variably adjustable first pump speed n5, and the second drive pump 7 is designed for variable rotation independently of the first pump speed n5 using a second pump parameter P7 in the form of a variably adjustable second pump speed n7, as shown in fig. 2.
Specifically, in fig. 2, the high-concentration solution pump 1 has a first drive motor 95 that is variably operable and a second drive motor 97 that is variably operable independently of the first drive motor 95. Here, the first drive motor 95 is designed for variable rotation of the first drive pump 5, and the second drive motor 97 is designed for variable rotation of the second drive pump 7.
In particular, the first drive motor 95 is designed for variably adjusting a first motor speed n95 thereof, and the second drive motor 97 is designed for variably adjusting a second motor speed n97 thereof.
The first drive motor 95 and the second drive motor 97 have electric drive motors 105 and 107, respectively. In particular, the first drive motor 95 and the second drive motor 97 are electric drive motors 105, 107, respectively.
In fig. 1, the high-concentration solution pump 1 has only one single drive motor 9.
Specifically, in fig. 1, the drive motor 9 has a combustion drive motor 10. The drive motor 9 is in particular a combustion drive motor 10.
Furthermore, in particular in fig. 1 and 2, the first drive pump 5 in the form of a first axial plunger pump 5 'having a variably adjustable first slide 6 is designed for variably adjusting a first pump parameter P5 in the form of a first pivot angle W6 of the first slide 6, and the second drive pump 7 in the form of a second axial plunger pump 7' having a variably adjustable second slide 8 is designed for variably adjusting a second pump parameter P7 in the form of a second pivot angle W8 of the second slide 8 independently of the first pivot angle W6.
In particular, the hydraulic drive system 3 has at least one actuator, in particular an electrically adjustable actuator. The at least one actuator is designed to variably adjust the first pivot angle W6 and the second pivot angle W8.
In particular, the drive motor 9, in particular the single drive motor, is designed to variably adjust the motor speed n9 of the drive motor. The method comprises the following steps: in particular, by means of the determination device 50, a motor speed target value n9S for the motor speed n9 is determined as shown in fig. 3 and 5 to 7 on the basis of the determined total drive volume flow target value QAS, in particular and the detected drive pressure actual value pAI. The method comprises the following steps: in particular, the high-concentration solution DS is fed by means of the high-concentration solution pump 1 by adjusting the motor speed n9 to the determined motor speed target value n 9S.
Further in the case of an increased total drive volume flow target value QAS within the low total drive volume flow target value ranges QASB1, QASB1', the first rocking angle target value W6S of the first rocking angle W6 is increased, in particular from the first rocking angle minimum value W6min 0%, up to the first rocking angle maximum value W6max, in particular 100%, and the second rocking angle target value W8S of the second rocking angle W8 is constant, in particular the second rocking angle minimum value W8min 0%, as shown in fig. 6 and 7. In the case of a higher total drive volumetric flow target value QAS within the total drive volumetric flow target value range QASB2, QASB2', the second pivot angle target value W8S is increased, in particular from the second pivot angle minimum value W8min 0%, in fig. 6 up to 80% and starting from 80% and in fig. 7 up to 50% and starting from 50%, up to the second pivot angle maximum value W8max, in particular 100%.
In particular and if the first pivot angle target value W6S is the first pivot angle maximum value W6max and the second pivot angle target value W8S is the second pivot angle maximum value W8max, the motor rotational speed target value n9S is increased from the motor rotational speed minimum value n9min, 70% in fig. 6 and 60% in fig. 7, up to the motor rotational speed maximum value n9max, in particular 100%, in the case of an increased total drive volume flow target value QAS in the again higher total drive volume flow target value range QASB4, QASB 3'.
In the graph shown in fig. 6, the second axial plunger pump 7 generates a higher total drive volume flow rate value QAW of the total drive volume flow rate QA at the second swing angle maximum value W8max of the second swing angle W8 than the first axial plunger pump 5 generates at the first swing angle maximum value W6max of the first swing angle W6. In the case of the increased total drive volume flow rate target value QAS in the low total drive volume flow rate target value range QASB1, the first pivot angle target value W6S of the first pivot angle W6 is higher than the second pivot angle target value W8S of the second pivot angle W8 up to the first pivot angle maximum value W6 max. In the case of a raised total drive volume flow target value QAS in a higher total drive volume flow target value range QASB2, the second rocking angle target value W8S is higher than the first rocking angle target value W6S up to the second rocking angle maximum value W8 max.
For the diagram shown in fig. 7, the second axial piston pump 7 generates the same total drive volume flow value QAW in the case of the second maximum oscillation angle value W8max as the first axial piston pump 5 in the case of the first maximum oscillation angle value W6 max.
In particular, in fig. 6, the low total driving volume flow target value range QASB1 is greater than 0% up to 30% of the total driving volume flow maximum value QAmax. The higher total drive volumetric flow target value range QASB2 is greater than 30% up to 40% of the total drive volumetric flow maximum value QAmax. The higher total drive volumetric flow target value range QASB4 is again greater than 70% up to 100% of the maximum total drive volumetric flow value QAmax. Additionally, the total driving volume flow target value range 0 is lower than the low total driving volume flow target value range QASB 10%, and the total driving volume flow target value range QASB3 between the higher total driving volume flow target value range QASB2 and the again higher total driving volume flow target value range QASB4 is greater than 40% up to 70%.
In fig. 7, the low total driving volume flow target value range QASB1' is greater than 0% up to 40% of the total driving volume flow maximum value QAmax. The higher total drive volumetric flow target value range QASB2' is greater than 40% up to 80% of the total drive volumetric flow maximum value QAmax. The higher total drive volumetric flow target value range QASB3' is again greater than 80% up to 100% of the maximum total drive volumetric flow value QAmax. Additionally, the total driving volumetric flow target value range 0 is lower than the low total driving volumetric flow target value range QASB 10%.
Furthermore, in the case of an elevated total drive volume flow target value QAS within a higher total drive volume flow target value range QASB2, the first pivot angle target value W6S is constant, in particular the first pivot angle minimum value W6min 0%, as shown in fig. 6.
In the case of an increased total drive volumetric flow target value QAS in the total drive volumetric flow target value range QASB3, the first pivot angle target value W6S is increased, in particular from the first pivot angle minimum value W6min 0%, in particular up to 70%, and from 70%, up to the first pivot angle maximum value W6 max.
Further, in the case of the increased total drive volume flow rate target value QAS within the total drive volume flow rate target value range QASB3, the second rocking angle target value W8S is increased, in particular from 50%, up to the second rocking angle maximum value W8 max.
In the case of an increased total drive volume flow target value QAS in a higher total drive volume flow target value range QASB2', the first pivot angle target value W6S is increased, in particular from 50%, up to the first pivot angle maximum value W6max, as shown in fig. 7.
Therefore, if the determined total driving volume flow target value QAS is within the low total driving volume flow target value ranges QASB1, QASB1' and the higher total driving volume flow target value range QASB2, in particular the total driving volume flow target value range QASB3, the first parameter target value P5S and the second parameter target value P7S are different from each other.
Additionally, if the determined total drive volume flow target value lies within the total drive volume flow target value range 0, the higher total drive volume flow target value range QASB2 'and the again higher total drive volume flow target value range QASB4, QASB3', the first parameter target value P5S and the second parameter target value P7S are identical to each other.
In addition, the motor rotational speed target value n9S, in particular, the motor rotational speed minimum value n9min, is constant within the total drive volume flow target value range 0, the low total drive volume flow target value ranges QASB1, QASB1', the higher total drive volume flow target value ranges QASB2, QASB2' and the total drive volume flow target value range QASB 3.
The method also has: in accordance with the optimization criterion OK, a first parameter target value P5S and a second parameter target value P7S, in particular a motor speed target value n9S, are determined, as shown in fig. 3 to 5. The optimization criterion OK is the maximum efficiency η 1max of the high-concentration solution pump 1, in particular the maximum efficiency η 2max of the hydraulic drive system 2, in particular the maximum efficiency η 5max of the first drive pump 5 and/or the maximum efficiency η 7max of the second drive pump 7, or the minimum energy consumption EV9, in particular the minimum fuel consumption KV9, and/or the maximum efficiency p9max of the at least one drive motor 9, 95, 97.
In particular, the user-manipulable operating panel 51 is designed to specify, in particular select, the optimization criterion OK by the user of the high-concentration solution pump 1.
In fig. 3, the first parameter target value P5S and the second parameter target value P7S, in particular the motor speed target value n9S, are determined by means of a look-up table or online.
In particular, the look-up table is determined, in particular calculated, by means of a characteristic map, in particular an efficiency characteristic map, of the first drive pump 5 and the second drive pump 7, in particular and of the at least one drive motor 9, 95, 97 for a possible total drive volume flow target value QAS, in particular and a possible drive pressure actual value pAI, as shown in fig. 4.
In fig. 5, a first parameter target value P5S and a second parameter target value P7S, in particular a motor speed target value n9S, are determined, in particular calculated, on-line by means of a combined characteristic curve, in particular the combined characteristic curve, of the first drive pump 5 and the second drive pump 7, in particular of the at least one drive motor 9, 95, 97.
Furthermore, the drive device 50 has a signal connection, in particular an electrical signal connection, with the first drive pump 5 and the second drive pump 7, in particular by means of the at least one actuator, in particular the control panel 51, the sensor 40 and the at least one drive motor 9, 95, 97.
The embodiments as shown and described above clearly show that: the present invention provides an advantageous method for operating a high-concentration solution pump and an advantageous high-concentration solution pump, each having improved characteristics.
Claims (15)
1. A method for operating a high-concentration solution pump (1),
-wherein the high-concentration solution pump (1) has:
-a high-concentration solution delivery system (2), wherein the high-concentration solution delivery system (2) is designed for delivering a high-concentration solution (DS) with a variably adjustable delivery volume flow (QF); and
-a hydraulic drive system (3), wherein the hydraulic drive system (3) has for driving the high-concentration solution delivery system (2);
a hydraulic circuit (4) with a Hydraulic Fluid (HF),
-a first drive pump (5) which can be operated variably, and
-a second drive pump (7) which can be operated variably,
-wherein the first drive pump (5) is designed for variable operation with at least one variably adjustable first pump parameter (P5) and the second drive pump (7) is designed for variable operation with at least one variably adjustable second pump parameter (P7) independently of the first pump parameter (P5) to produce a variably adjustable total drive volume flow (QA) of the Hydraulic Fluid (HF) in the hydraulic circuit (4),
-wherein the method has the steps of:
-determining a total drive volumetric flow target value (QAs) of said total drive volumetric flow (QA);
-determining a first parameter target value (P5S) of the first pump parameter (P5) and a second parameter target value (P7S) of the second pump parameter (P7) from the determined total drive volumetric flow target value (QAS), wherein the first parameter target value (P5S) and the second parameter target value (P397) differ from each other if the determined total drive volumetric flow target value (QAS) is within at least one total drive volumetric flow target value range (QASB 1, QASB2, QASB3, QASB1 ') from a set (0, QASB1, QASB2, QASB3, QASB4, QASB1', QASB2', QASB 3') of possible total drive volumetric flow target values (QAS); and also
-delivering the high concentration solution (DS) at a delivery volume flow (QF) with a delivery volume flow target value (QFS) by generating a total driving volume flow (QA) with the determined total driving volume flow target value (QAS) by adjusting the first pump parameter (P5) to the determined first parameter target value (P5S) and the second pump parameter (P7) to the determined second parameter target value (P7S).
2. The method of claim 1, wherein the first and second light sources are selected from the group consisting of,
-wherein the method has the steps of: determining, in particular detecting, a delivery volume flow target value (QFS) for the delivery volume flow (QF), and
-wherein the method has: -determining the total driving volume flow target value (QAS) from the determined delivery volume flow target value (QFS).
3. The method according to any one of the preceding claims,
-wherein the method has the steps of: detecting a drive pressure (pA), in particular an actual drive pressure (pAI) for driving a high pressure (pH), of the Hydraulic Fluid (HF) in the hydraulic circuit (4), wherein the actual drive pressure (pAI) for the drive pressure (pA) is set as a function of the actual delivery pressure (pFI) for the delivery pressure (pF) of the high-concentration solution (DS) during delivery, and wherein the actual delivery pressure (3526) for the high-concentration solution (DS) is set as a function of the actual delivery pressure (pFI)
-wherein the method has: determining the first parameter target value (P5S) and the second parameter target value (P7S) as a function of the detected actual value of drive pressure (pAI).
4. The method according to any one of the preceding claims,
-wherein the high-concentration solution pump (1) has at least one drive motor (9, 95, 97), wherein the at least one drive motor (9, 95, 97) is designed for rotating the first drive pump (5) and the second drive pump (7) to generate the total drive volume flow (QA), and further wherein
-wherein the method has: delivering the high concentration solution (DS) by rotating the first drive pump (5) and the second drive pump (7) by the at least one drive motor (9, 95, 97).
5. The method according to any one of the preceding claims,
-wherein the first drive pump (5) is designed for variable rotation using a first pump parameter (P5) in the form of a variably adjustable first pump rotational speed (n 5), and the second drive pump (7) is designed for variable rotation independently of the first pump rotational speed (n 5) using a second pump parameter (P7) in the form of a variably adjustable second pump rotational speed (n 7).
6. The method according to claim 4 and 5,
-wherein the high-concentration solution pump (1) has a first drive motor (95) which is variably operable and a second drive motor (97) which is variably operable independently of the first drive motor (95), wherein the first drive motor (95) is designed for variable rotation of the first drive pump (5) and the second drive motor (97) is designed for variable rotation of the second drive pump (7).
7. The method of claim 6, wherein said at least one of said first and second sets of parameters is selected from the group consisting of,
-wherein the first drive motor (95) and the second drive motor (97) each have an electric drive motor (105, 107), in particular an electric drive motor (105, 107).
8. The method according to claim 4 or claim 4 as dependent thereon,
-wherein the drive motor (9), in particular the only drive motor, has a combustion drive motor (10), in particular a combustion drive motor (10).
9. The method according to any one of the preceding claims,
-wherein the first drive pump (5) in the form of a first axial plunger pump (5 ') having a variably adjustable first slide (6) is designed for variably adjusting a first pump parameter (P5) in the form of a first swing angle (W6) of the first slide (6), and the second drive pump (7) in the form of a second axial plunger pump (7') having a variably adjustable second slide (8) is designed for variably adjusting a second pump parameter (P7) in the form of a second swing angle (W8) of the second slide (8) independently of the first swing angle (W6).
10. The method according to claims 4 and 9, in particular and according to claim 3,
-wherein the drive motor (9), in particular the sole drive motor, is designed for variably adjusting a motor rotational speed (n 9) of the drive motor,
-wherein the method has the steps of: determining a motor speed target value (n 9S) for the motor speed (n 9) on the basis of the determined total drive volume flow target value (QAS), in particular and the detected actual drive pressure value (pAI), and
-wherein the method has: delivering the high concentration solution (DS) by adjusting the motor speed (n 9) to the determined motor speed target value (n 9S).
11. The method according to claim 9 or 10,
-wherein in case of an increased total drive volume flow target value (QAS) within a low total drive volume flow target value range (QASB 1, QASB1 '), the first oscillation angle target value (W6S) of the first oscillation angle (W6) is increased up to a first oscillation angle maximum value (W6 max) and the second oscillation angle target value (W8S) of the second oscillation angle (W8) is constant, and within a higher total drive volume flow target value range (QASB 2, QASB 2'), the second oscillation angle target value (W8S) is increased up to a second oscillation angle maximum value (W8 max), in particular and if the first oscillation angle target value (W6S) is the first oscillation angle maximum value (W6 max) and the second oscillation angle target value (W8S) is the second oscillation angle maximum value (W8 max) again within a higher total drive volume flow target value range (QASB 4), QASB 3'), the motor rotational speed target value (n 9S) is increased from the motor rotational speed minimum value (n 9 min) to the motor rotational speed maximum value (n 9 max).
12. The method according to any one of claims 9 to 11,
-wherein the second axial plunger pump (7) produces a higher total drive volume flow value (QAW) of the total drive volume flow (QA) in case of a second oscillation angle maximum (W8 max) of the second oscillation angle (W8) than the first axial plunger pump (5) in case of a first oscillation angle maximum (W6 max) of the first oscillation angle (W6), and moreover
-wherein in case of an elevated total drive volume flow target value (QAS) within a low total drive volume flow target value range (QASB 1), the first oscillation angle target value (W6S) of the first oscillation angle (W6) is higher than the second oscillation angle target value (W8S) of the second oscillation angle (W8) up to the first oscillation angle maximum value (W6 max), in a higher total drive volume flow target value range (QASB 2), the second oscillation angle target value (W8S) is higher than the first oscillation angle target value (W6S) up to the second oscillation angle maximum value (W8 max), in particular and again within a higher total drive volume flow target value (QAS 4) if the first oscillation angle target value (W6S) is the first oscillation angle maximum value (W6 max) and the second oscillation angle target value (W8S) is the second oscillation angle maximum value (W8 max), the motor speed target value (n 9S) is increased from a minimum motor speed value (n 9 min) to a maximum motor speed value (n 9 max).
13. The method according to any of the preceding claims, in particular according to claim 4 or to claims dependent on claim 4, in particular according to claim 10,
-wherein the method has: the first parameter target value (P5S) and the second parameter target value (P7S), in particular the motor speed target value (n 9S), are determined as a function of an optimization criterion (OK), wherein the optimization criterion (OK) is a maximum efficiency (η 1 max) of the high-consistency solution pump (1), in particular a maximum efficiency (η 2 max) of the hydraulic drive system (2), or a minimum energy consumption (EV 9), in particular a minimum fuel consumption (KV 9), and/or a maximum efficiency (η 9 max) of the at least one drive motor (9, 95, 97).
14. The method according to any one of the preceding claims,
-wherein the first drive pump (5) and the second drive pump (7) are arranged in parallel in the hydraulic circuit (4), and/or
-wherein the hydraulic drive system (3) has a variably movable drive piston (11 a, 11 b) in the hydraulic circuit (4) for driving the high concentration solution delivery system (2),
-wherein the first drive pump (5) and the second drive pump (7) are designed for generating a variably adjustable total drive volume flow (QA) of the Hydraulic Fluid (HF) in the hydraulic circuit (4) for variably moving the drive pistons (11 a, 11 b), and furthermore
-wherein the method has: the high-concentration solution (DS) is delivered by means of variably moving the drive piston (11 a, 11 b).
15. A high-concentration solution pump (1), wherein the high-concentration solution pump (1) has:
-a high-concentration solution delivery system (2), wherein the high-concentration solution delivery system (2) is designed for delivering a high-concentration solution (DS) with a variably adjustable delivery volume flow (QF);
-a hydraulic drive system (3), wherein for driving the high-concentration solution delivery system (2), the hydraulic drive system (3) has:
a hydraulic circuit (4) with a Hydraulic Fluid (HF),
-a first drive pump (5) which can be operated variably, and
-a second drive pump (7) which can be operated variably,
-wherein the first drive pump (5) is designed for variable operation with at least one variably adjustable first pump parameter (P5) and the second drive pump (7) is designed for variable operation with at least one variably adjustable second pump parameter (P7) independently of the first pump parameter (P5) to produce a variably adjustable total drive volume flow (QA) of the Hydraulic Fluid (HF) in the hydraulic circuit (4); and
-a determination device (50), wherein the determination device (50)
-a total drive volume flow target value (QAS) designed for determining said total drive volume flow (QA), and
-designed for determining a first parameter target value (P5S) of the first pump parameter (P5) and a second parameter target value (P7S) of the second pump parameter (P7) from the determined total driving volume flow target value (QAS), wherein the first parameter target value (P5S) and the second parameter target value (P7S) differ from each other and QASB2, QASB3, QASB1 ') if the determined total driving volume flow target value (QAS) is within at least one total driving volume flow target value range (QASB 1, QASB1, QASB2, QASB3, QASB4, QASB1', QASB2', QASB 3') from the set of possible total driving volume flow target values (QAS)
-wherein the high-concentration solution pump (1) is designed for: delivering the high concentration solution (DS) at a delivery volume flow (QF) with a delivery volume flow target value (QFS) by generating a total driving volume flow (QA) with the determined total driving volume flow target value (QAS) by adjusting the first pump parameter (P5) to the determined first parameter target value (P5S) and the second pump parameter (P7) to the determined second parameter target value (P7S).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102020200261.4 | 2020-01-10 | ||
| DE102020200261.4A DE102020200261A1 (en) | 2020-01-10 | 2020-01-10 | Method for operating a thick matter pump and thick matter pump |
| PCT/EP2021/050019 WO2021140068A1 (en) | 2020-01-10 | 2021-01-04 | Method for operating a high-density solids pump and high-density solids pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114981539A true CN114981539A (en) | 2022-08-30 |
| CN114981539B CN114981539B (en) | 2024-08-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202180008476.8A Active CN114981539B (en) | 2020-01-10 | 2021-01-04 | Method for operating a high-concentration solution pump and high-concentration solution pump |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20230026231A1 (en) |
| EP (1) | EP4088027B1 (en) |
| KR (1) | KR20220119057A (en) |
| CN (1) | CN114981539B (en) |
| DE (1) | DE102020200261A1 (en) |
| WO (1) | WO2021140068A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102021212815A1 (en) * | 2021-11-15 | 2023-05-17 | Putzmeister Engineering Gmbh | System and method of operating a system |
| DE102023201817A1 (en) | 2023-02-28 | 2024-08-29 | Robert Bosch Gesellschaft mit beschränkter Haftung | Method for controlling a hydraulic drive system |
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- 2021-01-04 KR KR1020227023237A patent/KR20220119057A/en active Search and Examination
- 2021-01-04 WO PCT/EP2021/050019 patent/WO2021140068A1/en unknown
- 2021-01-04 EP EP21700156.9A patent/EP4088027B1/en active Active
- 2021-01-04 CN CN202180008476.8A patent/CN114981539B/en active Active
- 2021-01-04 US US17/791,660 patent/US20230026231A1/en active Pending
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| EP0905596A2 (en) * | 1997-09-27 | 1999-03-31 | KSB Aktiengesellschaft | Automatic adaption of the control range of a pressure control loop in multiple pump arrangements |
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| DE19924473A1 (en) * | 1999-05-28 | 2000-11-30 | Mannesmann Rexroth Ag | Hydraulic drive with several hydraulic consumers including a differential cylinder, in particular on a plastic injection molding machine |
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Also Published As
| Publication number | Publication date |
|---|---|
| US20230026231A1 (en) | 2023-01-26 |
| EP4088027A1 (en) | 2022-11-16 |
| CN114981539B (en) | 2024-08-02 |
| KR20220119057A (en) | 2022-08-26 |
| DE102020200261A1 (en) | 2021-07-15 |
| WO2021140068A1 (en) | 2021-07-15 |
| EP4088027B1 (en) | 2024-02-28 |
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